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Finding the Fourth Proportional to 123,358.20, 185,123.70 and 79,092.60

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Solution

The fourth proportional to 123,358.20, 185,123.70 and 79,092.60 is: 118,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,358.20 : 185,123.70 = 79,092.60 : x
  2. Step 2: Convert to fraction form
    123,358.20/185,123.70 = 79,092.60/x
  3. Step 3: Cross multiply
    123,358.20x = 185,123.70 × 79,092.60
  4. Step 4: Simplify right side
    123,358.20x = 14,641,914,754.62
  5. Step 5: Solve for x
    x = 14,641,914,754.62/123,358.20
  6. Step 6: Final answer
    x = 118,694.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.